Daikin MC55XVM6 Air Purifier, Lifetime Supply of HEPA Filter, Lifetime Odour Filter, Dual Technology Flash Streamer & Active Plasma, 440 Sq. Feet coverage, Healthy air all year.
Errors identified:
1. "440 Sq. Feet" should be corrected to "440 Sq. Ft.".
2. Vertical bars "|" should be used to separate features for improved readability.
3. "Healthy air all year" should be capitalized to "Healthy Air All Year" for consistency with title case.
4. "Lifetime Supply of HEPA Filter" and "Lifetime Odour Filter" should be combined into "Lifetime Supply of HEPA & Odour Filters" for redundancy removal.

Suggested title:
Daikin MC55XVM6 Air Purifier | Lifetime Supply of HEPA & Odour Filters | Dual Technology Flash Streamer & Active Plasma | 440 Sq. Ft. Coverage | Healthy Air All Year